結果
問題 | No.95 Alice and Graph |
ユーザー | raven7959 |
提出日時 | 2022-08-30 21:08:32 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,888 ms / 5,000 ms |
コード長 | 5,399 bytes |
コンパイル時間 | 2,919 ms |
コンパイル使用メモリ | 227,980 KB |
実行使用メモリ | 14,128 KB |
最終ジャッジ日時 | 2024-11-07 15:01:11 |
合計ジャッジ時間 | 12,536 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 862 ms
14,092 KB |
testcase_01 | AC | 121 ms
13,972 KB |
testcase_02 | AC | 114 ms
14,128 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 1,329 ms
14,084 KB |
testcase_05 | AC | 1,049 ms
13,844 KB |
testcase_06 | AC | 1,314 ms
13,960 KB |
testcase_07 | AC | 123 ms
13,980 KB |
testcase_08 | AC | 3 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 3 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 2,888 ms
13,988 KB |
ソースコード
#include <bits/stdc++.h> #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,fma,abm,mmx,avx,avx2") #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define rrep(i, n) for (int i = (int)(n - 1); i >= 0; i--) #define all(x) (x).begin(), (x).end() #define sz(x) int(x.size()) #define yn(joken) cout<<((joken) ? "Yes" : "No")<<"\n" #define YN(joken) cout<<((joken) ? "YES" : "NO")<<"\n" using namespace std; using ll = long long; using vi = vector<int>; using vl = vector<ll>; using vs = vector<string>; using vc = vector<char>; using vd = vector<double>; using vld = vector<long double>; using vvi = vector<vector<int>>; using vvl = vector<vector<ll>>; using vvs = vector<vector<string>>; using vvc = vector<vector<char>>; using vvd = vector<vector<double>>; using vvld = vector<vector<long double>>; using vvvi = vector<vector<vector<int>>>; using vvvl = vector<vector<vector<ll>>>; using vvvvi = vector<vector<vector<vector<int>>>>; using vvvvl = vector<vector<vector<vector<ll>>>>; using pii = pair<int,int>; using pll = pair<ll,ll>; const int INF = 1e9; const ll LINF = 2e18; template <class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } template <class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } bool ispow2(int i) { return i && (i & -i) == i; } bool ispow2(ll i) { return i && (i & -i) == i; } template <class T> vector<T> make_vec(size_t a) { return vector<T>(a); } template <class T, class... Ts> auto make_vec(size_t a, Ts... ts) { return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...)); } template <typename T> istream& operator>>(istream& is, vector<T>& v) { for (int i = 0; i < int(v.size()); i++) { is >> v[i]; } return is; } template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) { for (int i = 0; i < int(v.size()); i++) { os << v[i]; if (i < int(v.size()) - 1) os << ' '; } return os; } static uint32_t RandXor(){ static uint32_t x=123456789; static uint32_t y=362436069; static uint32_t z=521288629; static uint32_t w=88675123; uint32_t t; t=x^(x<<11); x=y; y=z; z=w; return w=(w^(w>>19))^(t^(t>>8)); } static double Rand01(){ return (RandXor()+0.5)*(1.0/UINT_MAX); } template <typename T = int> struct Edge{ int from, to; T cost; int idx; Edge() = default; Edge(int from, int to, T cost = 1, int idx = -1) : from(from), to(to), cost(cost), idx(idx) {} operator int() const { return to; } }; template <typename T = int> struct Graph{ vector<vector<Edge<T>>> g; int es; Graph() = default; explicit Graph(int n) : g(n), es(0) {} size_t size() const{ return g.size(); } void add_directed_edge(int from, int to, T cost = 1){ g[from].emplace_back(from, to, cost, es++); } void add_edge(int from, int to, T cost = 1){ g[from].emplace_back(from, to, cost, es); g[to].emplace_back(to, from, cost, es++); } void read(int M, int padding = -1, bool weighted = false, bool directed = false){ for (int i = 0; i < M; i++){ int a, b; cin >> a >> b; a += padding; b += padding; T c = T(1); if (weighted) cin >> c; if (directed) add_directed_edge(a, b, c); else add_edge(a, b, c); } } inline vector<Edge<T>> &operator[](const int &k){ return g[k]; } inline const vector<Edge<T>> &operator[](const int &k) const{ return g[k]; } }; template <typename T = int> using Edges = vector<Edge<T>>; template <typename Matrix, typename T> void warshall_floyd(Matrix &g, T INF){ for (size_t k = 0; k < g.size(); k++){ for (size_t i = 0; i < g.size(); i++){ for (size_t j = 0; j < g.size(); j++){ if (g[i][k] == INF || g[k][j] == INF) continue; g[i][j] = min(g[i][j], g[i][k] + g[k][j]); } } } } void solve(){ int N,M,K; cin>>N>>M>>K; Graph<int> G(N); vvi E(N,vi(N,INF)); rep(_,M){ int u,v; cin>>u>>v; u--; v--; G.add_edge(u,v); E[u][v]=1; E[v][u]=1; } warshall_floyd(E,INF); int cnt=1; ll ans=0; vi used={0}; for(int i=N-1;i>=1;i--){ used.emplace_back(i); cnt++; // グラフを縮約 Graph<ll> G2(cnt); rep(i,cnt){ rep(j,i){ G2.add_edge(i,j,E[used[i]][used[j]]); } } // bitDP vvl DP(1<<cnt,vl(cnt,LINF)); DP[1][0]=0; for(int mask=1;mask<(1<<cnt);mask++){ rep(v,cnt){ for(auto e:G2[v]){ if(mask>>e.to&1) continue; chmin(DP[mask|(1<<e.to)][e.to],DP[mask][v]+e.cost); } } } ll m=LINF; rep(i,cnt) chmin(m,DP[(1<<cnt)-1][i]); if(m<=K){ ans+=(1LL<<i); ans--; } else{ cnt--; used.pop_back(); } if(cnt>=K+1) break; } cout<<ans<<endl; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); solve(); }